PGT is one of the important technologies of IVF, also known as third-generation IVF, which is important for blocking the transmission of genetic diseases. A.正确B.错误正确答案：正确

Genetic diseases are diseases caused by chromosomal abnormality, excluding diseases caused by genetic mutations. A.正确B.错误正确答案：错误

Balanced chromosomal translocation a condition in which part of a chromosome has broken off and reattached in another location. A.正确B.错误正确答案：正确

Mutations in genes encoded by mtDNA result in a range of maternal inherited diseases. Mitochondrial replacement prevents mitochondrial mutations from passing to the next generation. A.正确B.错误正确答案：正确

In embryo freezing, non-permeable protectants, such as monosaccharides, fructose, etc., have a relatively large molecular weight, which cannot enter cells, and have no obvious cytotoxicity. Therefore, prolonged exposure to high concentrations of such substances does not affect th … 阅读详情>> "In embryo freezing, non-permeable protectants, such as monosaccharides, fructose, etc., have a relatively large molecular weight, which cannot enter cells, and have no obvious cytotoxicity. Therefore, prolonged exposure to high concentrations of such subs"

Which of the following statements is true about genetic disorders？ A.Carriers with chromosomal balanced translocation generally have no phenotype, but infertility, miscarriage and fetal malformations may occur during childbirthB.Patients with genetic diseases must have a family h … 阅读详情>> "Which of the following statements is true about genetic disorders？"

Indications for PGT include（） A.Patients with chromosome number and structural abnormalitiesB.History of chromosomally abnormal child or pregnancyC.Advanced maternal ageD.HLA matching, pepole with cancer susceptibility genes正确答案：Patients with chromosome number and structural abno … 阅读详情>> "Indications for PGT include（）"

Conventional IVF procedures include （） A.Gonadotropin is used to stimulate the development of multiple follicles.B.The development of follicles are monitored by blood endocrine hormones tests and B-ultrasound.C.When follicles grow to mature, chorionic gonadotropins are injected t … 阅读详情>> "Conventional IVF procedures include （）"

Major indications for ICSI include （） A.Severe male inferilityB.Obstructive azoospermiaC.Previous fertilization failure using conventional IVFD.Ovulation dysfunction正确答案：Severe male inferility；Obstructive azoospermia；Previous fertilization failure using conventional IVF

Which of the following is not X-linked recessive disease （） A.Wilson diseaseB.Hemophilia AC.Progressive Muscular DystrophyD.Red-green colorblindness正确答案：Wilson disease

The definition of Robertsonian translocation is （） A.The two long arms of two separate acrocentric chromosomes are lost.B.The two short arms of two separate acrocentric chromosomes are fused. The long arms are lost.C.The two long arms of two separate metacentric chromosomes are f … 阅读详情>> "The definition of Robertsonian translocation is （）"

About Controlled Ovarian Hyperstimulation, which of the following is wrong （） A.GnRH agonist is used to increase the number of follicles.B.Natural cycle has only one mature egg so that the success rate is low.C.The ovulation time is not fixed. It is not easy to obtain eggs.D.Indi … 阅读详情>> "About Controlled Ovarian Hyperstimulation, which of the following is wrong （）"